JP2003151699A - Power supply jack and electronic device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply jack miniaturizing the size and thinning its thickness. SOLUTION: A pipe 2 is provided with a lock ring groove 2a in its outer circumference. The lock ring groove 2a is locked by a power spring 7 and provided for conducting with a substrate 10. A minus power supply pole spring 3 has its one part fixed to the pipe 2 inside the pipe 2 and has an elasticity for contacting the outer circumference of a power plug 11. A pin 5 contacting the inner circumference of the power plug 11 is fixed to the pipe 2 by an insulating pipe 6. Then, the insulating pipe 6 secures the insulation between the minus power supply pole spring 3 and the pin 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power jack and electronic equipment using the same.

[0002]

2. Description of the Related Art A conventional power jack is disclosed in Japanese Patent Laid-Open No. 5-159.
826, Japanese Utility Model Laid-Open No. 6-23176, JP-A-9-63689.
As can be seen from Fig. 2, the base consists of an opening for inserting and removing the plug, and the plug and the electrode terminal connected to the board. The electrode terminal of the jack is fixed to the board by soldering. Also, when waterproofing electronic devices,
A structure is known in which an opening of a power jack is covered with a rubber lid and a packing is held around the opening.

The conventional power jack will be described in more detail with reference to FIGS. 11 and 12. 11 is a sectional view of the conventional example, and FIG. 12 is a plan view of FIG.
As shown in FIGS. 11 and 12, the case 1 has an insertion hole 1a for accommodating the board 10 and a power jack 14 and a packing groove for accommodating the main body packing 10. The case 1 is screwed through the main body packing 10. Stopped at 11.
The power jack 14 for inserting and removing the power plug 13 is the base 1
4a, a minus electrode 14b, and a plus electrode 14d. The base 14a is a positioning hole 10 for the substrate 10.
The convex portion 14g to be inserted into d and the groove portion 14f for attaching the first packing 8 are provided, and the minus connecting portion 14c at the end portion of the minus electrode 14b exposed from the base portion and the plus connecting portion 14e at the end portion of the plus electrode 14d are The structure is such that they are fixed by soldering to the minus hole 10b and the plus hole 10c of the board 9, respectively.

[0004]

However, the power jack used in the conventional portable equipment has the following problems. Since the convex portion of the power jack is inserted into the hole of the board to mount the power jack on the board, the board needs a space for the power jack mounting portion including the mounting hole of the power jack. Since the connection terminals of the power jack were soldered to the board for connection, a mounting pattern was required on the board. For waterproofing the power jack itself, it is necessary to tightly fix (insert molding or adhesion) by penetrating the connection terminal into the base.

As described above, since the power supply jack 14 composed of the base 14a, the minus electrode 14b, and the plus electrode 14d is mounted on the substrate, there is a problem that the portable device cannot be made compact and thin.

[0006]

A power supply jack according to the present invention comprises a hollow member having a groove on its outer periphery for engaging a fixing piece for fixing and electrically connecting to another component.
A part of the hollow member is fixed to the inside of the hollow member and has an elastic first terminal that contacts the outer periphery of the power plug, a second terminal that contacts the inner periphery of the power plug, and a second terminal. The insulating member is fixed to the hollow member and insulates the first terminal and the second terminal from each other.

In the power supply jack according to the present invention, the pipe has a first packing on the outer circumference of the pipe for preventing liquid from entering between the pipe and another device, and the inside of the pipe and the second packing. And a second packing for preventing liquid from entering the terminal.

An electronic apparatus according to the present invention has a power jack and a fixing piece having one end fixed to a board, fixing an outer periphery of the power jack, and electrically connecting the power jack and the board. .

A fixing means and a waterproof means for inserting the pipe into the hole of the case through the packing and inserting the pin into the through hole of the pipe through the packing, and a conduction means for electrically connecting the pipe and the pin to the substrate from the power plug. The power jack was used and the base of the power jack was deleted. Furthermore, the connection between the pipe and the pin and the substrate can be attached and detached by a spring.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is based on a structure for fixing a pin connected to a positive electrode of a power plug and a pipe connected to a negative electrode of a power plug through a power negative spring, and mounting packing on the pin and the pipe. Waterproof structure. In addition, the power supply jack and the board can be downsized and thinned and the portable device can be downsized by the conduction structure by the spring having the connection portion of the plus electrode and the minus electrode.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings.

<Embodiment 1> FIGS. 1 to 4 show a form of a portable device equipped with a power jack of the present invention. Figure 1
It is a sectional view before inserting a power plug into a power jack. FIG. 2 is a cross-sectional view after inserting the power plug into the power jack. FIG. 3 is a vertical partial cross-sectional view of the periphery of a power supply jack in a portable device as viewed from the insertion / removal direction of the power supply plug shown in FIG. 1. FIG. 4 is a rear plan view partial perspective view around the power jack in the mobile device shown in FIG.

In FIG. 1, the case 1 is composed of a lower case and an upper case. The lower case has a screw hole for fixing the upper case and a screw hole for fixing the board.
In addition, the lower case is provided with a packing groove for preventing water and the like from coming into contact with the upper case when combined with the upper case. On the other hand, the upper case has a stepped hole for fixing the lower case. Further, the upper case is provided with the step portion 1c from the contact surface with the lower case,
Avoid contact with 0. Further, in the upper case, an insertion hole 1a for inserting the power jack is opened in the horizontal direction. A part of the insertion hole 1a is provided with a degree determining portion 1b for allowing the power supply spring 7 connected to the substrate 10 to escape. The case that is the upper case is fixed by screws 13 after inserting the packing 12 into the packing groove of the lower case.

The substrate 10 is connected to the two power supply springs 7. The connection is made with a substrate contact portion 7b provided on the power spring 7.
Is bent toward the substrate side and brought into contact with the substrate.
The power supply spring 7 extends in the direction opposite to the board 10 and contacts the power supply jack. With the screw 13, the substrate 10 is
It is fixed to the lower case.

The power supply jack comprises a pipe 2, a bush 4, a power supply minus spring 3, a pin 5, an insulating pipe 9, a first packing 8 and a second packing 9. Inside the pipe 2, first and second step portions are provided in the direction in which the power plug 11 is inserted, and a third step portion is provided on the opposite side. First
A power source minus spring 3 whose tip is bent in a dogleg shape is inserted into the bush 4 and fixed to the stepped portion. The power source negative spring 3 contacts the negative pole of the power source plug 11 when the power source plug 11 is inserted into the power source jack. The second step is to prevent the power minus spring 3 from coming into contact with the pipe 2 when the power minus spring 3 is bent and deformed when the power plug 11 is inserted into the power jack. The second packing 9 is inserted into the third step. In order to hold down the second packing 9 and fix the pin 5, the hollow insulating pipe 6 is driven into the pipe 2 from the direction opposite to the direction in which the power plug 11 is inserted. Insert the pin 5 into the insulating pipe 6 to fix the pin 5. At this time, the second
With the packing 9 and the insulating pipe 6, the pin 5 and the pipe 2
Does not conduct. The pin 5 has a retaining ring groove 5a on the outermost periphery thereof. In addition, on the outer periphery of the pipe 2, the first
The packing mounting groove 2b and the retaining ring groove 2a are provided.

The power jack is fixed by fitting the snap ring groove 5a provided on the pin 5 with the snap ring groove 5a of the pipe 2 and the snap ring groove 2a of the pipe 2, and the board 10 is connected to the power jack. At this time, if the first packing 8 is inserted into the first packing groove 2b, the pipe 2 and the insertion hole 1
It is possible to prevent water and the like from entering between a.

As shown in FIG. 1, the power source minus spring 3 connects the retaining ring groove 2a and the first packing 8 to the first packing mounting groove 2 by the bush 4 in the insertion direction of the power plug 11.
It is fitted to the pipe 2 attached to b. Further, a power jack having a structure in which the pin 5 having the retaining ring groove 5b into which the insulating pipe 6 and the second packing 9 are inserted is inserted in the pipe 2 in the opposite direction is inserted into the insertion hole 1a from the outside of the case 1. Further, the two retaining portions 1b in the case, the retaining ring groove 2a of the pipe and the retaining ring groove 5a of the pin are aligned with each other and the retaining ring portion 7a of the power supply lead spring 7 is engaged with the power supply jack to unplug the power supply plug. Regulated in the direction. Regarding the direction in which the power jack is pushed into the power plug, the gap between the stepped portion 1c of the case 1 and the pin 5 is blocked and regulated. On the other hand, the power source pattern 10a of the substrate 10 fixed by the screw 13 is connected to the substrate contact portion 7b of the power source lead spring 7. Also,
The case is fixed with a screw 11 via the main body packing 10.

As shown in FIG. 2, when the power plug 11 is inserted into the insertion portion 1a of the case 1, the pin tip 5a is inserted into the hole (not shown) of the power plug 11. Incidentally, the pin 5 moves in the power plug insertion direction,
The gap between the case step portion 1c and the pin 5 is closed and the pin 5 stops. Further, the minus electrode of the power plug 11 is engaged with the minus power spring 3.

Next, FIG. 3 which is a sectional view in a direction perpendicular to the direction of inserting and removing the power plug will be described. FIG. 3 is a sectional view taken along the line AA ′ of FIG. As shown in FIG. 3, a pipe 2, a power source negative spring 3, a bush 4, a pin 5, an insulating pipe 6, a first packing 8 and a second packing 9 are formed in the insertion hole 1a of the case 1 (the bush 4 and Insulation pipe 6 and first packing 8
And the second packing 9 is not shown. ) The power jack is inserted. Further, when the retaining ring portion 7a of the power spring 7 is supported by the retaining ring groove 2a of the pipe, it is connected to the substrate contact portion 7b of the power spring 7 and the substrate 10. The main body packing 12 is arranged between the upper case and the lower case.

As shown in FIG. 4, the pipe 2, the power source minus spring 3, the bush 4, the pin 5, the insulating pipe 6, the first packing 8 and the second packing 8 are inserted into the insertion hole 1a of the case in the insertion direction of the power plug 11. There is a power jack composed of packing 9. (The power supply minus spring 3, the insulating pipe 6, and the second packing 9 are not shown.) The power supply jack is inserted. Further, the power supply spring 7 is supported by the retaining ring groove 2a of the pipe and is connected to the power supply pattern 10a of the substrate. The other power spring 7 is a pin retaining ring groove 5a.
It is also connected to the power supply pattern 10a of the substrate.

Now, a method of assembling the power jack portion according to the embodiment of the present invention will be described. A bush 4 and a power source minus spring 3 are fitted to the inner diameter of the pipe 2 in the power plug insertion direction from the beginning. The first packing 8 is provided in the first packing mounting groove 2b having the outer diameter of the pipe 2.
Attach. Further, the insulating pipe 6 and the second packing 9 are inserted from the direction of the tip 5b of the pin 5. Then pipe 2
The power jack is assembled by inserting the pin 5 into the inner diameter of the power plug in the opposite direction from the tip portion 5b.

Further, by inserting the power jack into the insertion hole 1a of the case 1 up to the vicinity of the step 1c, the position determining portion 1b of the case 1, the retaining ring groove 2a of the pipe 2 and the retaining ring groove 5a of the pin 5 are inserted. Match. Here, by engaging the retaining ring portion 7a of the power spring 7 with the retaining ring groove of the pipe 2 and the pin 5, the power jack is fixed to the case. Next, the case with the power jack fixed to the case and the main body packing 1
The substrate contact portion 7b of the power supply spring 7 and the power supply pattern 10a of the substrate 10 are connected by screwing one case in which the substrate 10 is fixed with the screw 13 via 2. The above is the method for assembling the power supply jack part, and the pipe 2 and the pin 5 are the first packing 8 and the second packing 9 according to the above.
By being sealed and fixed by, water does not enter from the insertion hole 1a of the case 1 and the through hole of the pipe 2.

A conduction path of an electric signal in the power jack of the embodiment of the present invention will be described. Power plug 11
When is inserted into the insertion portion of the power jack, the minus signal of the power plug 13 is conducted from the tip of the power minus spring 3 to the pipe 2 and from the retaining ring groove 2a of the pipe 2 to the power spring 7 to the tip of the power spring 7. A certain substrate contact portion 7b is connected to the power supply pattern 10a of the substrate 10 and is electrically connected to an electronic circuit.

On the other hand, the plus signal of the power plug 11 is conducted from the tip 5b to the pin 5 and from the retaining ring groove 5a of the pin 5 to the power spring 7, and the substrate contact portion 7b at the tip of the power spring 7 is connected to the substrate 10. It is connected to the power supply pattern 10a and is electrically connected to an electronic circuit. At this time, the pipe 2 and the pin 5 inserted into the through hole of the pipe 2 are insulated by the insulating pipe 6.

<Embodiment 2> Next, a concrete description will be given based on another embodiment of the present invention. 5 to 7 show forms of a portable device equipped with the power jack of the present invention. Figure 5
6 is a cross-sectional view before inserting the power plug into the mobile device, FIG. 6 is a plan view of FIG. 5 with the back case and screws removed, and FIG. 7 is a cross-sectional view after inserting the power plug into the mobile device.

As shown in FIG. 5, a pin tip portion 5a connected to a plus electrode in a hole (not shown) of the power plug 11 and two second packing mounting grooves 5c for mounting the two second packings 9 therein. And the pin 5 having the retaining ring groove 5a for attaching the plus wire working spring 16 to the second packing 9
It is inserted into the through hole of the pipe 2 via. The second packing 9 detachably seals the pin 5 and the pipe 2 together with the insulation.

A power source negative spring retaining ring groove 2e for attaching a power source negative spring 3 consisting of a tip end portion connected to the negative electrode of the power source plug 11 and a retaining ring portion 3a and a first packing attaching groove 2b for attaching a first packing 8. And the outer peripheral portion of the pipe 2 having the collar portion 2c for locking the insertion position in the pipe insertion hole 1c provided in the case 1 and the retaining ring groove 2a for mounting the minus wire working spring 15 is provided with the case 1 through the first packing 8. It is inserted into the pipe insertion hole 1c provided in the. The pipe 2 and the case 1 are detachably sealed and fixed by the first packing 8.

That is, the front side of the pipe 2 is detachably fixed by the retaining ring portion 3a of the power source negative spring 3, and the rear side of the pipe 2 is detachably attached by the case 1 and the collar portion 2c. To fix.

Furthermore, when the insertion hole 1a for inserting the power plug 11 and the main body packing 12 are accommodated in the back case, the minus wire working spring 16 and the board 10 with the plus wire working spring 16 inserted therein are accommodated. Craft spring 1
5 and holding groove A1d for accommodating the plus wire working spring 16
The back case having the holding groove B1e is fastened with the screw 13.

That is, by attaching the plus wire working spring 16 to the retaining ring groove 5a of the pin 5, the plus wire working spring 16
Is detachably fixed to the substrate 10 by the holding groove B1e in the back case, thereby fixing the power plug insertion / removal direction of the pin 5. As shown in FIG. 6, there is a pin tip portion of the pin 5 in the insertion direction of the power supply plug 11, and the power supply minus spring 3 is arranged at the tip thereof. Further, in the main body packing groove provided in the case 1, the flange portion 2c of the pipe 2 and the pipe 2 are
Minus hole 10b into which the minus wire working spring 15 connected to and the plus wire working spring 16 connected to the pin 5 are inserted
And the main body packing 12 is installed so as to surround the substrate 10 having the plus hole 10c.

As shown in FIG. 7, when the power plug 11 is inserted into the insertion hole 1a provided in the case 1, the pin tip portion 5a of the positive electrode is inserted in the hole (not shown) of the power plug 11.
When the pin 5 is inserted, the pin 5 moves in the insertion direction of the power plug, but the gap between the plus wire working spring 16 and the holding groove B1e in the back case is closed and the pin 5 stops. In addition, the tip of the power source negative spring 3 engages with the negative electrode of the power source plug 11. Next, FIG. 8 to FIG. 10 which are cross-sectional views in the direction perpendicular to the power plug insertion / removal direction will be described. 8 is a cross-sectional view taken along the line BB ′ of FIG. 5, and FIG. 9 is C of FIG.
FIG. 10 is a sectional view taken along line C-C ′, and FIG. 10 is a sectional view taken along line DD ′ of FIG. 5.

As shown in FIG. 8, the retaining ring groove 2a and the pin, which are inside the power plug insertion opening formed by the case 1 and the back case, into which the retaining ring portion 4a having the retaining ring shape of the power source negative spring 3 is inserted. The pipe 2 that supports 5 through the through hole is supported by the pipe insertion hole 1f in the case 1.

As shown in FIG. 9, the pipe 2 supporting the pin 5 in the through hole is supported by the case 1 and the minus wire working spring 15. The minus wire working spring 15 has a pipe contact portion 15a inserted into the snap ring groove 2a in the pipe 2 and a board minus contact portion 15b inserted into the two minus holes 10b in the board 10.
And a minus wire work spring head 15c supported by the holding groove A1d in the back case.

As shown in FIG. 10, the pin 5 is supported by the plus wire working spring 16. Positive wire work spring 16
Is a pin contact part 16a to be inserted into the snap ring groove 5a in the pin 5, a board minus contact part 16b to be inserted into the two plus holes 10c in the board 10, and a plus wire work supported by the holding groove B1e in the back case. Spring head 16
It is a configuration composed of c.

Now, a method of assembling the power jack portion, which is another embodiment of the present invention, will be described. First, insert the pipe 2 with the first packing 8 into the pipe insertion hole 1f of the case 1 from the power plug unplugging direction to the flange portion 2c of the pipe.
Insert it until it touches the case.

Next, the retaining ring portion 3a in the form of a retaining ring of the power source minus spring 3 is inserted into the power source minus spring retaining ring groove 2e of the pipe 2 exposed from the pipe inserting hole 1c of the front case 1. Further, the pin 5 having two second packings 9 mounted in the through hole of the pipe 2 is inserted from the insertion direction of the power plug into the retaining ring groove 5a of the pin 5 to the position of the plus hole 10c of the substrate 10.

Next, the substrate 10 in the vicinity of the retaining ring groove 2a of the pipe 2 exposed from the pipe insertion hole 1c of the rear case 1
By inserting the board minus contact portion 15c of the minus wire working spring 15 into the minus hole 10b, the pipe contact portion 15a of the minus wire working spring 15 is engaged with the snap ring groove 2a of the pipe 2.

Further, by inserting the board plus contact portion 16b of the plus wire working spring 16 into the plus hole 10c of the board 10 near the snap ring groove 5a of the pin 5 exposed from the rear of the snap ring groove 2a of the pipe 2, the pin 5 is inserted. The pin contact portion 16a of the plus wire working spring 16 is engaged with the retaining ring groove 5a. The above is the method for assembling the power supply jack portion, and the pipe 2 and the pin 5 are sealed and fixed by the first packing 8 and the second packing 9 as described above, so that water can enter from the pipe insertion hole 1c and the through hole of the pipe 2. Disappears.

A conduction path of an electric signal in the power jack of the embodiment of the present invention will be described. Power plug 11
When it is inserted into the insertion hole 1a of the case 1, the minus signal of the power plug 11 is transferred from the tip of the power minus spring 3 to the retaining ring 3a.
From e to the retaining ring groove 2a of the minus wire spring, from the pipe contact portion 15a of the minus wire spring 15 to the board minus contact portion 15b, finally, the electronic circuit is conducted through the minus hole 10b of the through hole of the board 10.

On the other hand, the plus signal of the power plug 11 is pin 5
From the pin tip 5b to the retaining ring groove 5a that stops the positive wire working spring.
a to the substrate plus contact portion 16b, and finally the substrate 10
It is conducted to the electronic circuit through the positive hole 10c of the through hole.

At this time, the pipe 2 and the pin 5 inserted into the through hole of the pipe 2 are insulated by the two second packings 9.

[0042]

As described above, the present invention has the following effects. The board does not require a space for a power jack mounting portion including a mounting hole for the power jack, and the board can be miniaturized. By removing the base of the power jack, the mounting height of the board can be limited. By using a spring to establish electrical continuity with the board, cumbersome soldering work is not required and the board can be miniaturized because there is no solder pattern. Further, since the spring is detachable from the board, the power jack can be easily disassembled. By the double packing structure of the pin outer periphery and the pipe outer periphery, the power jack itself can be easily waterproofed,
No need for close contact fixing (insert molding or adhesion) by penetrating the connection terminal into the base.

Further, according to the present invention, the waterproof structure of the power supply jack and the base of the conventional power supply jack can be eliminated by a structure completely different from that of the conventional power supply jack to provide a small and thin power supply jack and a portable device. There is an effect that can be made compact.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a form before a power plug is inserted into a portable device which is an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a form after the power plug is inserted into the portable device which is the embodiment of the present invention.

FIG. 3 is a side view in a direction perpendicular to a power plug inserting / removing direction that is an embodiment of the present invention, and is a cross-sectional view taken along the line AA ′ of FIG.

FIG. 4 is a partial perspective view of the back plane of FIG. 3 showing an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a form before inserting a power plug into a portable device which is another embodiment of the present invention.

FIG. 6 is a plan view of the other embodiment of the present invention with the back case and screws of FIG. 5 removed.

FIG. 7 is a cross-sectional view showing a form after inserting a power plug into a portable device according to another embodiment of the present invention.

FIG. 8 is a sectional view taken along line BB ′ of FIG. 5, which is another embodiment of the present invention.

FIG. 9 is a sectional view taken along line CC ′ of FIG. 5, which is another embodiment of the present invention.

10 is a cross-sectional view taken along the line D-D ′ of FIG. 5, which is another embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a conventional example.

FIG. 12 is a plan view showing a conventional example.

[Explanation of symbols]

1 case 1a insertion hole 1b degree deciding part 1c step 1d holding groove A 1e Holding groove B 1f Pipe insertion hole 2 pipes 2a retaining ring groove 2b First packing mounting groove 2c Tsuba part 2e Power supply slot spring retaining ring groove 3 power supply minus spring 3a retaining ring 4 bush 5 pin 5a retaining ring groove 5b tip 5c Second packing mounting groove 6 insulated pipes 7 Power spring 7a retaining ring 7b Substrate contact part 8 First packing 9 Second packing 10 substrates 10a power supply pattern 10b slot 10c Plus hole 10d Positioning hole 11 Power plug 12 Body packing 13 screws 14 power jack 14a Base 14b Negative electrode 14c Negative connection 14d positive electrode 14e Plus connection part 14f groove 14g convex 15 Minus wire work spring 15a Pipe contact part 15b Substrate negative contact 15c Minus wire work spring head 16 plus wire work spring 16a Pin contact part 16b Substrate plus contact part 16c Plus wire work spring head

Claims (3)

[Claims] 1. A hollow member having a groove on the outer circumference for engaging with a fixing piece for fixing and electrically connecting to another component, and an outer circumference of a power plug, a part of which is fixed inside the hollow member. A first terminal having elasticity to contact with, a second terminal contacting with the inner circumference of the power plug, and fixing the second terminal to the hollow member,
A power jack comprising: an insulating member that insulates the first terminal and the second terminal. 2. The pipe has a first packing on the outer periphery of the pipe for preventing liquid from entering between the pipe and another device, and between the inner side of the pipe and the second terminal. The power jack according to claim 1, further comprising a second packing for preventing liquid from entering the inside. 3. An electronic device comprising: the power jack according to claim 1 or 2; and a fixing piece having one end fixed to a substrate, fixing an outer periphery of the power jack, and electrically connecting the power jack and the substrate. machine.